Deck HistoryKiki-Jiki Mirror Breaker is a rare creature from the Kamigawa block. This deck first became popular in extended when Lorwyn came out with the card Pestermite. Here is how the combo works. Kiki-Jiki copies Pestermite. When the token of Pestermite comes into play, it untaps Kiki-Jiki. Rinse, repeat. You then have a huge number of hasty tokens with which you attack your opponent for the game.Jump forward a few years to Rise of the Eldrazi. Wizards gave us the card Splinter Twin. Splinter Twin does the same thing as Kiki-Jiki, but isn't vulnerable to creature hate. By the time this card came out, Kiki-Jiki had rotated from Extended, so Twin took the place of Kiki in the Pestermite combo decks. The premise is the same, but instead of the Pestermite token untapping Kiki-Jiki, the Pestermite token untaps the original Pestermite that has Splinter Twin attached to it.One block further and we have New Phyrexia. WotC again gave us another piece of the combo, but this time playable in standard. Deceiver Exarch. Exarch is basically the same as Pestermite, but less vulnerable to red based removal spells.

Some vids

About a year ago: Josh Hakakian's Twin deck at PT Philly. This is pre-Ponder and Preordain banning. http://www.youtube.com/watch?v=jh3vohtRsYU[url="http://www.starcitygames.com/magic/modern/23412_Video_Splinter_Twin_In_Modern.html"]Video: Splinter Twin in Modern[/url][url="http://www.starcitygames.com/magic/modern/24455-Video-Splinter-Twin-In-Modern.html"]U/R Splinter Twin in Modern[/url]

+[/size:xit2lni5] [size=7]= WIN

Key cards for the deck that are banned in modern.[cards]PonderPreordainPunishing Fire[/cards]This means we have to find new filter spells. Luckily, Serum Visions and Slight of Hand exist.

Core ChoicesCombo PiecesKiki-Jiki, Mirror Breaker - An important combo piece. 1-2 of in the deck.Splinter Twin - More important and arguably better than Kiki-Jiki. 4 of.Pestermite - The other half of the combo. Vulnerable to almost all red removal, this is usually played in lower numbers than Exarch. 2-4Deceiver Exarch - The other half of the combo. Not as squishy as Pestermite. 4 of no question.

CantripsSerum Visions Worse than Preordain, but it's the best we have in modern right now. 4 of.Slight of Hand Another one mana filter card. I recommend 0-4Gitaxian Probe Free is a huge plus. Let's you check for counter before you go off. 0-4 Personal PreferenceThought Scour Instant speed draw is nice. Doesn't filter, if you're playing Snapcaster Mage it could be useful to mill yourself, but it seems just like a cute interaction.

Please tell me if I missed anything.

Counterspells/ProtectionSpell Pierce - Good one mana counterspell. Stops everything except creatures. Usually sideboard material. 2-4 Copies somewhere in your 75Dispel[/c] - Counter hate. 3-4 Copies somewhere in your 75[c]Spell Snare - Counters Goyf, Bob, SCM, ramp spells, etc. Dispel and Pierce are almost always better in this deck. 0-2Remand - The tempo advantage is negliable in this deck. The plus side is it will dig you one deeper into your deck. This is almost always better as a hard counter in my experience.Mana Leak - The debate is often this vs. Rune Snag. You tend to counter things early in the game, so I would play Rune Snag 4 copies MD.Rune Snag - See above. If you are playing 5+ mana leak style effects, play 4 Rune Snag and X copies of mana leak.Dissipate - Counters and exiles. Solid card, but at three mana it's not really playable.Cryptic Command - The blue Wrath of God. This card can save you in the mirror and from just losing to aggro decks. 2-3 MD 1 SB

Spellskite Lack luster in the main, just win the counter war. Comes in from the sideboard when they bring in the hate. 2-4 SB

Removal SpellsLightning Bolt We're playing red, so why not play the best red card ever right? Wrong. We don't care about the "direct damage" because we're going to kill with combo.Flame Slash The better bolt in this deck. 4 Damage at sorcery speed to a creature > 3 Damage instant speed to a creature. This card owns problem cards for us like opposing Spellskite and Linvala, Keeper of SilenceGut Shot Killing an unflipped Delver is cute, I guess.Dismember I tend to use Dismember as Flame Slash 5 and 6. It will likely always cost you four life, but can usually take out Goyf, Batterskull Tokens, Restoration Angel, and is a generally good answer for what ales you.Fire Spout - Wrath is always good. If you pack at least one green source, this becomes amazing against token decks. 1-2 Main Deck.Pyroclasm the 2 mana Fire SpoutSlag Storm Fire Spout just seems better because it doesn't tax the mana base as much.Electrostatic Bolt Good against affinity.

Flex SpotsThese are often filled with Alternate Win Conditions.Inferno Titan It's cute to Kiki an Inferno Titan and swing for 18. If that doesn't win you the game, then I'd be shocked.Vendillion Clique Disruptive creature that can also help you dig deeper. If you have flex spots open, this is what I would put in.

Cards for your SB[u:xit2lni5]Artifact Hate0-3Ancient Grudge If you're splashing green for Firespout, this is an awesome card. 3 Mana two for one against Affinity? Thanks!0-3Shattering Spree If you're a purist and prefer straight UR, this card can often wipe an opponents field. Many people will bring in Torpor Orb to tell with you. Make sure you bring this or Grudge in every matchup.2-3Echoing Truth Lectrys swears by this card and I also happen to think it is indeed the truth in Modern Twin (pun intended). It wrecks a tokens player's day. It takes care of pesky permanents, cough planeswalkers cough, that your flameslash can't. It is often the "bounce your torpor orb, untap, win." Against Affinity you can reset there annoying creatures or just time walk them by bouncing Memnites and Ornithopters.1 Cryptic Command Not good enough for a full playset maindeck, but this card is indeed the saving grace in aggro matchups and combo mirrors.2-4 Spellskites - Depending on how many you have Main, and what your meta looks like.

Wrath EffectsFirespout in the MD just becomes larger from the SB. UR purists can play Slagstorm, even though it's worse.

Targeted RemovalIf your playing Dismember in the maindeck, you'll want it out for the Aggro matchup. Swap them out for some more Flame Slash or Electrostatic Bolt against affinity.

Affinity (by Yanni)Game 1 against affinity you want to go first. Affinity has stupid explosive hands and you want to be on the defensive as much as possible until you can get off your lethal combo. Counter their mana artifacts, kill their lords, and hopefully they'll be left with a bunch of 1/1s and 0/2s. Don't be afraid to run out a Mite or an Exarch to mess with combat math for the Affinity player if you need to. As long as you can stay above 8 life or so, you should be fine.Game 2 against affinity gets much better. You can bring in all kinds of fun hate cards. Bring in your Spellskites to eat their removal spells. Bring in your artifact hate (be it Grudge or Shattering Spree) An extra Firespout or Cryptic won't hurt either. Your matchup gets much better because you get to eat all of their creatures early and blank their removal with your skites. Often hitting with a firespout will wipe their board of everything except Master of Etherium (on the off chance they're playing it) which can then be hit by something janky. CC to sleep their field and draw is a valid play, use it liberally. You're playing a UR control deck until you can combo.

My thoughts: I'm going to be able to say it better than the Pros, but I have some stuff to add. I've been running a Breeding Pool off of Flooded Strands, not optimal (?) but it hasn't been a problem for me yet. I'd maybe like to fit a Combust in the 'board over an EE, but I'm not sure how necessary it is. Vedalken Shackles is better than Sower of Temptation, assuming you don't have to play against Abrupt Decay and Inquisition of Kozilek right? Sower is better against Abzan, but I think I'd bring Shackles in for more matchups.

I like him in blue matchups. If I get two -2's out of him I'm happy, that's usually enough gas. He gains you a fair bit of life too. I think he's probably better than any other CA engine you would want to run, but I could see cutting him for something else.

I'm still trying to decide how to configure my sideboard, at the moment I'm set with 2 Blood Moons, Anger of the Gods, Keranos, Batterskull, Spellskite, 2 Negates, 1 Counterflux.I've got access to only 1 Sower of Temptation, otherwise I'd play two, and since I'm splashing black (Terminate, Tasigur) instead of green I'm probably going to test 1 Rakdos Charm and a Vandalblast.That leaves me with two slots, one of them probably being Slaughter Games (a FU clause against Scapeshift and Ad Nauseam) and I was evaluating JAoT as well.

Command is a little pricy, but the Snapcaster clause sounds juicy. Maybe I'll test it after I've decided what to do with the rest of my 74s

Also, I've decided to cut Tasigur for now, as the list was starting having too much tension between cards: IoK, Remand and Tasigur are cards that don't blend together that well.I've got to think of Todd Anderson's idea of playing a three-of out of the sideboard, but I feel like Batterskull and Keranos are just stronger.

I'm playing Twin for some months and my list it's very close to the Seth. I'm very comfortable with my main 60 cards and will not change any of that. The sideboard will change if the meta change and if the % of the field of the principal decks to. Now I see very few Zoo and other heavy creatures decks and I cut the Anger of the God, I see a lot of BURN decks so I had a second Negate and a second Batterskull to the sideboard.